Dual-speed version (formerly known as the Sleepmate / Soundscreen 980A) has two speeds that allow for greater flexibility in achieving perfect tone and volume settings The white noise produced by the Dohm can also be used as a shield to provide confidentiality for doctor's appointments, phone calls with clients, or to otherwise protect personal privacy Produces soothing sound naturally – no loops or recordings Blocks distracting noises to improve concentration and promote serious sleep The UL-listed Marpac Dohm-DS has an 8-foot power cord and runs on a normal household current Color: Fog white Product Specifications Quantity Per Sell: 1 Shipping Dimensions: 7.4 x 4.4 x 7.4 IC Shipping Weight: 1.9 LB Application: White Noise Machine Brand/Series: Marpac Color: Fog White Material: ABS Plastic Product Dimensions: 5-3/4 X 3-1/4 Inch